This is a collection of eight stories by Silverberg that was aimed at what was called at the time the juvenile market. (Now it would be YA.) Two of them were first published under the pseudonym Calvin M. Knox, and all of them are from the 1950s except the last story, After the Myths Went Home (one of my favorites), which is from a 1969 issue of F & SF. It's interesting that all eight are from different sources; one each from Science Fiction Stories, Astounding SF, Galaxy, Infinity, Saturn, Fantastic Universe, F & SF, and one from Pohl's Star original anthology series. They're good stories, age appropriate, though some are a bit dated what with expanded awareness of colonialism and such. I thought they were thoughtful and thought-provoking and fun!